iPhone 4 Photo stuck in thumbnail - help!

Hey everyone,

I took a photo recently and I just hadn't had the time to sync to my computer until now. I connected my iPhone and went to iPhoto and saw that the photo wasn't coming up.

I went back onto the iPhone and checked in the Photos app, no where in there, so my last try was in the Camera app. I saw it in the small thumbnail preview in the lower left, but when I clicked on it, it's no where to be found. So to clarify, I click on the thumbnail of the photo I'm looking for, but when it comes up, it's a different picture (the previous one in the Camera Roll).

Is there ANY WAY to get this picture back? It was a very important one...

Thanks!